Atomic Spectroscopy
... transitions from the ground state to a higher energy level. Atoms in the excited state are generally unstable and will rapidly revert to the ground state, losing the acquired energy in the process. Emission lines are produced when these transitions from higher energy states to lower energy states oc ...
... transitions from the ground state to a higher energy level. Atoms in the excited state are generally unstable and will rapidly revert to the ground state, losing the acquired energy in the process. Emission lines are produced when these transitions from higher energy states to lower energy states oc ...
Metal-optic and Plasmonic Semiconductor
... miniaturization. Smaller lasers are more energy efficient, are cheaper to make, and open up new applications in sensing and displays, among many other things. Yet, up until recently, there was a fundamental problem with making lasers smaller: purely semiconductor lasers couldn’t be made smaller than ...
... miniaturization. Smaller lasers are more energy efficient, are cheaper to make, and open up new applications in sensing and displays, among many other things. Yet, up until recently, there was a fundamental problem with making lasers smaller: purely semiconductor lasers couldn’t be made smaller than ...
OPTICAL TWEEZERS: Characterization and Systems
... the direction of light rays A and B. The resultant gradient force vector, Fnet , (shown in Figure 1.1(a)) is towards the ray A as it has a higher intensity than ray B due to a Gaussian intensity profile. In [3] it was shown that the gradient force for dielectric particles can be large enough to domi ...
... the direction of light rays A and B. The resultant gradient force vector, Fnet , (shown in Figure 1.1(a)) is towards the ray A as it has a higher intensity than ray B due to a Gaussian intensity profile. In [3] it was shown that the gradient force for dielectric particles can be large enough to domi ...
Resonant-wavelength control and optical
... have also found that the resonant wavelength is shifted by a few nanometers, even if we constrain the graded SCH cavity to have an effective thickness of . This shift is caused by competing effects of a shift in an effective-confinement boundary as well as a larger leakage of the optical field. This ...
... have also found that the resonant wavelength is shifted by a few nanometers, even if we constrain the graded SCH cavity to have an effective thickness of . This shift is caused by competing effects of a shift in an effective-confinement boundary as well as a larger leakage of the optical field. This ...
Feedback and PID Control Theory
... aircraft (i.e. the airframe will not glide on its own). The F-16 does fly because 5 onboard computers constantly measure the aircraft’s flight characteristics and then apply corrections to the control surfaces (i.e. rudder, flaps, ailerons, etc…) to keep it from tumbling out of control. The advantag ...
... aircraft (i.e. the airframe will not glide on its own). The F-16 does fly because 5 onboard computers constantly measure the aircraft’s flight characteristics and then apply corrections to the control surfaces (i.e. rudder, flaps, ailerons, etc…) to keep it from tumbling out of control. The advantag ...
PDF - Photonics Research Group
... Ohmic contacts on top of the membrane is one of the technologies that need to be optimized for electrically-pumped membrane opto-electronic devices. Firstly, devices with ever-smaller sizes require minimized specific contact resistances to obtain high speed and low power consumption. Secondly, in a ...
... Ohmic contacts on top of the membrane is one of the technologies that need to be optimized for electrically-pumped membrane opto-electronic devices. Firstly, devices with ever-smaller sizes require minimized specific contact resistances to obtain high speed and low power consumption. Secondly, in a ...
Antireflective Coatings
... Laser Line Polarization Beamsplitter Coatings (LPS) Broadband Polarization Beamsplitter Coatings (BPS) Dichroic Beamsplitters Mirrors Coatings (DBS) High Reflective Coatings Dielectric High Reflective Coatings (DHR) Metallic High Reflective Coatings (MHR) Diode Pumped Laser Optics Coatings (DPC) Mul ...
... Laser Line Polarization Beamsplitter Coatings (LPS) Broadband Polarization Beamsplitter Coatings (BPS) Dichroic Beamsplitters Mirrors Coatings (DBS) High Reflective Coatings Dielectric High Reflective Coatings (DHR) Metallic High Reflective Coatings (MHR) Diode Pumped Laser Optics Coatings (DPC) Mul ...
Different Types of Dispersions in an Optical Fiber
... Graded index fibers have core diameter of 50, 62.5 or 85 m and a cladding diameter of 125 m. The fiber is used in applications requiring a wide bandwidth and low model dispersion. The number of modes in the fiber is about half that of step index fiber having the same diameter. Single mode step ind ...
... Graded index fibers have core diameter of 50, 62.5 or 85 m and a cladding diameter of 125 m. The fiber is used in applications requiring a wide bandwidth and low model dispersion. The number of modes in the fiber is about half that of step index fiber having the same diameter. Single mode step ind ...
High resolution time-resolved imaging system in the
... A Vacuum ultraviolet (VUV) refers to the wavelength ranges from 10 to 200 nm. The name originated from the fact that the spectral region is absorbed by air. The light in the VUV range should be used in a vacuum environment. The VUV radiations can be utilized for both bare and patterned wafer inspect ...
... A Vacuum ultraviolet (VUV) refers to the wavelength ranges from 10 to 200 nm. The name originated from the fact that the spectral region is absorbed by air. The light in the VUV range should be used in a vacuum environment. The VUV radiations can be utilized for both bare and patterned wafer inspect ...
Optical amplifier
An optical amplifier is a device that amplifies an optical signal directly, without the need to first convert it to an electrical signal. An optical amplifier may be thought of as a laser without an optical cavity, or one in which feedback from the cavity is suppressed. Optical amplifiers are important in optical communication and laser physics.There are several different physical mechanisms that can be used to amplify a light signal, which correspond to the major types of optical amplifiers. In doped fibre amplifiers and bulk lasers, stimulated emission in the amplifier's gain medium causes amplification of incoming light. In semiconductor optical amplifiers (SOAs), electron-hole recombination occurs. In Raman amplifiers, Raman scattering of incoming light with phonons in the lattice of the gain medium produces photons coherent with the incoming photons. Parametric amplifiers use parametric amplification.